I have never seen any tracks where trains can move from line to line outside of where trains share tracks with other lines. What are the locations where they move the rail cars to different lines? How do trains move from the green line (where brand new trains are delivered) to the red, orange, blue and silver lines? Do they have special tunnels where they switch tracks?
I've always wondered this. Because if all the lines are connected, that means Metro can actually change all its current routes without adding any new track or tunnels.
A&C connector, south of Farragut North track A2 on the A route Red line to west of McPherson Square track C2 on the C route Blue, Orange and Silver lines.
B&E connector, south of Fort Totten between the mainline tracks on the B route Red line to east of Fort Totten track E1 on the E route Green line.
C&J connector (actually know as Alexandria east yard leads), east of Alexandra Yard between the mainline of the J route Blue line to north of Eisenhower Avenue on the outside of the mainline tracks of the C route Yellow line.
The connector tracks were configured for non revenue moves only. The B&E connector was modified to accommodate revenue moves during the period of time the Green line Shortcut was operated between Greenbelt and Farragut North prior to the opening of the mid city segment of the E route Green line between U Street and Fort Totten.
Both connections are shown on these maps:
129 Mile Area Regional System Track Schematic.
WMATA 129 Mile Area Regional System Map
John in the sand box of Maryland's eastern shore.